Product Overview

The Schneider Electric MVS10N Circuit Breaker is part of the EasyPact MVS low-voltage air circuit breaker (ACB) product family. Designed for electrical power distribution systems, this circuit breaker provides protection against overloads and short circuits while supporting the safe isolation of electrical circuits during maintenance.

Air circuit breakers are commonly installed in main distribution boards, industrial switchboards, and large electrical panels. They protect electrical equipment by interrupting current when a fault exceeds the configured protection thresholds. Correctly selected circuit breakers help reduce the risk of equipment damage, electrical fires, and prolonged production interruptions.

The MVS10N range includes different configurations for industrial and commercial power distribution. Depending on the complete catalog number, a unit may have a fixed or drawout mounting arrangement, three or four poles, and different electronic trip units and operating mechanisms.

A representative three-pole drawout configuration is rated at 1000 A, with an operational voltage of up to 690 V AC. Its documented breaking capacity is 50 kA at 220–440 V AC. These values should not be automatically applied to every MVS10N variant; the full catalog number and nameplate must be checked before equipment selection or replacement.

The drawout design available within the range allows the breaker to be withdrawn from its connected position for inspection or maintenance without removing the entire switchboard assembly. This arrangement can be useful in industrial facilities where equipment accessibility and maintenance planning are important.

The Schneider Electric MVS10N is suitable for appropriately engineered low-voltage distribution systems. Selection should take into account the system voltage, rated current, prospective short-circuit current, protection requirements, installation arrangement, and coordination with upstream and downstream protective devices.

Technical Specifications

Important: MVS10N is a product family designation rather than a complete configuration-specific catalog number. Verify the full reference to confirm rated current, pole count, trip unit, operating mechanism, mounting type, and short-circuit ratings.

Function and Working Principle

The MVS10N circuit breaker provides switching and protective functions in low-voltage electrical distribution systems. It monitors current through its protection system and opens its contacts when the configured protection conditions are met.

1. Overload Protection

An overload occurs when a circuit carries more current than intended for a sustained period. This may result from excessive equipment demand, a mechanical problem that increases motor current, or an incorrectly designed distribution circuit.

The electronic trip unit available on applicable MVS10N configurations can provide adjustable long-time protection. The purpose is to allow normal operating current while disconnecting the circuit when a sustained overload exceeds the configured limits.

The pickup current and delay settings must be coordinated with conductor ampacity, connected equipment, and the overall protection strategy.

2. Short-Circuit Protection

A short circuit can produce a rapid increase in current. If it is not interrupted promptly, the resulting thermal and electromagnetic stresses can damage cables, busbars, transformers, and other equipment.

The MVS10N range includes configurations with short-time and instantaneous protection functions. Their availability and adjustment ranges depend on the installed trip unit.

The selected circuit breaker must have a suitable breaking capacity for the prospective fault current at the installation point. A 50 kA rating at a specified voltage should not be assumed to apply at every voltage or in every configuration.

3. Electronic Trip Unit

Applicable MVS10N versions use an electronic trip unit to measure current and apply programmed protection characteristics.

Depending on the trip unit, available functions may include long-time, short-time, instantaneous, and ground-fault protection. Some configurations provide measurement or display capabilities, while others offer a more basic protection arrangement.

Before commissioning, confirm the installed trip-unit model and its available functions. Protection settings should be established by qualified personnel based on the electrical design and coordination study.

4. Switching and Isolation

The breaker can be used to switch and isolate an electrical circuit as part of a properly designed distribution system. Its suitability for isolation is subject to the applicable product standard and installation requirements.

Opening the breaker does not necessarily make every part of the equipment safe to access. Upstream supplies, auxiliary circuits, stored energy, and backfeed sources must be considered before maintenance.

5. Drawout Operation

In a drawout configuration, the breaker can be moved between defined positions in its supporting chassis. These positions typically distinguish the connected, test, and disconnected states, depending on the design.

This arrangement supports maintenance and functional checking while reducing the need to remove the complete breaker assembly from the switchboard.

Operators must follow the manufacturer’s procedure for racking, interlocking, and verifying the breaker position. Drawout operation must never be used as a substitute for appropriate electrical isolation and safety procedures.

Role in Industrial Power Distribution Systems

The MVS10N is designed to serve as a protective switching device in low-voltage power distribution. It may be installed at the incoming supply, a main bus section, or a distribution feeder, depending on the electrical architecture.

Main Distribution Boards

In industrial facilities, the main distribution board receives power from a transformer, generator, or other source and distributes it to downstream circuits.

An appropriately rated MVS10N circuit breaker can provide protection and switching at a suitable point in this system. Its current rating and breaking capacity must match the design requirements.

Motor Control and Production Equipment

Industrial production lines contain motors, drives, pumps, compressors, and other electrical loads. The circuit breaker may protect a distribution section supplying these systems.

Motor branch protection may require additional protective devices, depending on the circuit design. The MVS10N should not be assumed to provide every function needed for individual motor overload protection.

Transformer and Generator Distribution

The breaker may be considered for distribution systems supplied by transformers or generators. Engineers must evaluate source characteristics, available fault current, voltage, and protection coordination.

Generator-fed systems can have different fault-current characteristics from utility-fed systems, so settings and protective-device selection should reflect the actual source.

Critical Industrial Facilities

Manufacturing plants, utilities, and large commercial facilities require reliable distribution protection to reduce equipment damage and support safe maintenance.

The MVS10N can form part of this protection architecture when its complete configuration meets the required electrical ratings and operating conditions.

Industrial Applications

1. Factory Power Distribution

Manufacturing facilities use distribution switchboards to supply production machinery, control panels, lighting, and auxiliary equipment.

A suitably selected MVS10N circuit breaker can provide protection and switching for a main distribution section or feeder. The breaker must be coordinated with downstream devices to reduce the scope of unnecessary power interruptions.

2. Commercial Buildings

Large commercial buildings may require low-voltage distribution protection for mechanical equipment, lighting systems, and other substantial electrical loads.

The MVS10N family may be considered for appropriate distribution applications where the rated current, voltage, and fault-interruption requirements are satisfied.

3. Industrial Utilities

Water treatment facilities, process plants, and utility installations rely on dependable power distribution for pumps, ventilation systems, control equipment, and auxiliary loads.

The circuit breaker can help isolate a faulted section when correctly selected and coordinated with the rest of the electrical system.

4. Transformer Secondary Protection

A circuit breaker installed on a transformer secondary can provide protection for downstream distribution equipment. The required rating depends on transformer capacity, secondary voltage, impedance, cable sizing, and prospective fault current.

The final selection must be supported by the electrical design rather than by rated current alone.

5. Main Switchboards and Bus Sections

Large switchboards may use air circuit breakers to protect incoming supplies, bus sections, or major outgoing feeders.

Where the MVS10N is applied in such a role, the designer must verify short-time withstand requirements, selectivity, isolation arrangements, and any interlocking functions required by the switchboard design.

Installation and System Integration

Correct installation is essential for reliable protection and safe operation.

1. Verify the Complete Catalog Number

MVS10N covers multiple breaker configurations. Before installation, confirm the full catalog number on the nameplate and compare it with the electrical drawings.

Check the rated current, number of poles, mounting type, trip unit, operating mechanism, connection arrangement, and breaking capacity. A breaker that shares the same family name may not be a suitable replacement.

2. Confirm Electrical Ratings

Verify the nominal system voltage, operating frequency, expected load current, and prospective short-circuit current.

The circuit breaker’s rated breaking capacity must be adequate for the fault current at the installation point. Protection settings must also be coordinated with cable ratings, downstream equipment, and upstream protective devices.

3. Check Switchboard Dimensions

The supplied dimensions are 439 × 441 × 395 mm, with a listed weight of 70 kg. These values correspond to a representative three-pole drawout MVS10N configuration.

Before preparing the switchboard, confirm the manufacturer’s dimensional drawing for the exact model. Allow sufficient space for the chassis, cable terminations, operating clearances, ventilation, and maintenance access.

The breaker and its supporting chassis must be installed in a compatible assembly. Do not assume that a breaker can be fitted into an existing chassis solely because the external dimensions appear similar.

4. Inspect Electrical Connections

Inspect the busbar connections, terminals, contact surfaces, and grounding arrangements before commissioning.

Connections must be tightened to the specified torque, and contact surfaces must be clean and undamaged. Incorrect connections can cause excessive heating, voltage drop, or unreliable operation.

Installation and maintenance must be carried out by qualified personnel using appropriate isolation and lockout procedures.

5. Configure and Test Protection

Confirm the installed trip unit and its available protection functions. Set protection parameters according to the approved coordination study and the electrical characteristics of the installation.

Functional testing should verify the trip unit, operating mechanism, interlocks, auxiliary contacts, and indication functions where fitted. Any testing procedure must follow the manufacturer’s instructions.

6. Verify Drawout Mechanism and Interlocks

For drawout versions, inspect the chassis, guide rails, position indicators, and mechanical interlocks. Verify that the breaker can be moved between its intended positions according to the manufacturer’s procedure.

Do not force the racking mechanism or bypass interlocks. Any abnormal resistance or failure to reach a defined position should be investigated before the breaker is returned to service.

Compatible System Components

The MVS10N works as part of a larger electrical distribution assembly. The following components may be used with a suitably configured breaker, subject to model-specific compatibility.

Not all listed components are included with every MVS10N breaker. Confirm the actual bill of materials and accessory references before ordering.

Alternative Models and Replacement Considerations

When replacing an MVS10N circuit breaker, the alternative must meet the original electrical and mechanical requirements. A different breaker with a similar current rating may still be incompatible with the switchboard or protection scheme.

Before selecting a replacement, verify:

• Rated operational voltage and current.
• Number of poles and protected poles.
• Rated ultimate and service short-circuit breaking capacities.
• Short-time withstand capability.
• Trip unit type and available protection functions.
• Fixed or drawout mounting arrangement.
• Chassis dimensions and connection positions.
• Auxiliary contacts and electrical operating accessories.
• Interlocks and remote-control requirements.
• Applicable standards and switchboard certification.

A replacement should not be approved solely because its dimensions and rated current appear similar. Any modification to a switchboard assembly must follow the relevant design and safety requirements.

Key Advantages

High-Current Distribution Capability

The MVS10N family includes configurations designed for substantial low-voltage distribution currents. The exact rating depends on the complete catalog number.

Electronic Protection Options

Applicable configurations provide electronic trip units with adjustable protection characteristics, allowing the protection strategy to be matched to the installation.

Drawout Maintenance Arrangement

Drawout versions support withdrawal and inspection using the designed chassis mechanism, which can help simplify certain maintenance activities.

Isolation Capability

The breaker is designed for circuit switching and isolation according to its applicable product standards and installation requirements.

Integration into Industrial Switchboards

The MVS10N family can be incorporated into properly designed distribution boards and industrial switchgear assemblies.

Configurable Product Range

Different pole counts, mounting arrangements, operating mechanisms, and trip-unit configurations allow selection according to the requirements of the electrical system.

Technical FAQs

1. What is the Schneider Electric MVS10N?

The MVS10N is a model family within Schneider Electric’s EasyPact MVS low-voltage air circuit breaker range. It is used for switching, isolation, and electrical protection in distribution systems.

2. What is the rated current of the MVS10N?

A representative three-pole configuration is rated at 1000 A. The full catalog number must be checked to confirm the rating of the specific breaker.

3. What voltage does the MVS10N support?

Applicable MVS10N configurations have a rated operational voltage of up to 690 V AC at 50/60 Hz. Confirm the rating and conditions stated on the exact model’s documentation.

4. What is the breaking capacity?

For a representative MVS10N configuration with breaking capacity code N, the documented ultimate breaking capacity is 50 kA at 220–440 V AC. The applicable value depends on the model and operating voltage.

5. Is the MVS10N a fixed or drawout circuit breaker?

The MVS10N family includes fixed and drawout configurations. The dimensions supplied for this listing are consistent with a representative three-pole drawout version.

6. What does an electronic trip unit do?

An electronic trip unit monitors current and initiates a trip when configured protection conditions are met. Available functions and adjustment ranges depend on the specific trip-unit model.

7. Can the MVS10N protect a motor directly?

It may protect a distribution circuit supplying motor equipment, but the complete motor protection arrangement must be engineered for the application. Additional motor overload protection or other devices may be necessary.

8. Can I replace an MVS10N with another 1000 A breaker?

Not without verifying the complete electrical and mechanical specifications. The replacement must meet the required breaking capacity, short-time withstand, trip-unit functionality, pole configuration, mounting arrangement, and chassis compatibility.

9. What should I inspect before purchasing a used unit?

Check the full nameplate reference, physical condition, operating mechanism, terminals, contact condition, trip unit, and available test records. For drawout versions, also inspect the chassis and racking mechanism.

10. Why is the complete catalog number important?

The MVS10N designation identifies a product family with multiple configurations. The complete catalog number determines key details such as the trip unit, mounting type, operating mechanism, and other configuration-specific features.

Procurement and Maintenance Recommendations

When sourcing a Schneider Electric MVS10N circuit breaker, start by identifying the complete catalog number on the existing unit or electrical drawings. Confirm that the replacement matches the required current rating, voltage, pole configuration, trip unit, breaking capacity, and mounting arrangement.

For new, surplus, or refurbished equipment, request clear photographs of the nameplate, front panel, terminals, trip unit, and chassis where applicable. Confirm whether auxiliary contacts, operating accessories, and the drawout chassis are included in the sale.

Before installation, compare the unit with the switchboard drawings and verify the dimensions and connection arrangement. A breaker body and its chassis must be compatible with the installed assembly.

During maintenance, follow the manufacturer’s inspection schedule and applicable electrical safety procedures. Inspect the contacts, terminals, insulation, mechanical mechanism, trip unit, and interlocks as required. Protection settings should be documented and checked against the approved coordination study.

Any functional testing or adjustment should be carried out by qualified personnel using suitable equipment. After maintenance, verify the breaker’s mechanical operation, protection functions, auxiliary indications, and interlocks before returning it to service.

Conclusion

The Schneider Electric MVS10N EasyPact MVS circuit breaker is designed for low-voltage electrical distribution systems that require dependable switching, isolation, and overcurrent protection. The product family includes different current ratings, mounting arrangements, and electronic trip-unit configurations.

The supplied dimensions of 439 × 441 × 395 mm and weight of 70 kg are consistent with a representative three-pole drawout configuration. However, the full catalog number is essential for confirming the exact electrical and mechanical specifications.

For industrial procurement, maintenance, and replacement projects, verify the nameplate, breaking capacity, trip-unit functions, chassis compatibility, and installation requirements before ordering or commissioning the breaker.